(19)

(11)

EP 1 565 448 A2

(12)

(88) Date of publication A3: 02.12.2004 (43) Date of publication: 24.08.2005 Bulletin 2005/34 (21) Application number: 03774336.6 (22) Date of filing: 26.11.2003

(51) International Patent Classification (IPC)7: C07D 281/16 (86) International application number: PCT/KR2003/002579 (87) International publication number: WO 2004/047722 (10.06.2004 Gazette 2004/24)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR (30) Priority: 28.11.2002 KR 2002074691 (71) Applicant: SK Corporation Seoul 110-110 (KR)	(72) Inventors: KWAK, Byong-Sung 305-761 Daejeon (KR) CHUNG, Ki-Nam 305-761 Daejeon (KR) KOH, Ki-Ho 305-761 Daejeon (KR) HWANG, Hee-Jun 305-728 Daejeon (KR) (74) Representative: Knowles, James Atherton  Stevens Hewlett & Perkins 1 St Augustine's Place Bristol BS1 4UD Bristol BS1 4UD (GB)